Modify Response Object in Slim 3 via external class - php

Question

I have a issue with my slim app, i want send json responses but with customed headers. My code is like follow:
index.php
require 'vendor/autoload.php';
require 'app/config.php';
require 'app/libs/api.cs.php';
$app = new Slim\App(
[
"settings" => $config,
"apics" => function() { return new APIHelper(); } //This is a class that contain a "helper" for api responses
]
);
require 'app/dependences.php';
require 'app/middleware.php';
require 'app/loader.php';
require 'app/routes.php';
// Run app
$app->run();
app/libs/api.cs.php (The "helper")
<?php
class APIHelper
{
public function sendResponse($response, $status='success' ,$code = 200, $message = "", $data = null)
{
$arrResponse = array();
$arrResponse['status'] = $status;
$arrResponse['code'] = $code;
$arrResponse['message'] = $message;
$arrResponse['data'] = $data;
return $response
->withHeader('Access-Control-Allow-Origin', '*')
->withHeader('Access-Control-Allow-Headers', 'X-Requested-With, Content-Type, Accept, Origin, Authorization, AeroTkn')
->withHeader('Access-Control-Allow-Methods', 'GET, POST, PUT, DELETE, OPTIONS')
->withHeader('Content-Type','application/json')
->withHeader('X-Powered-By','My API Server')
->withJson($arrResponse,$code);
}
}
my routes file (app/routes.php)
$app->group('/foo', function () {
$this->get('', function ($req, $res, $args) {
return $this->apics->sendResponse($res, 'success' ,200, "Foo API Index By Get", null);
});
$this->post('', function ($req, $res, $args) {
try{
$oBody = $req->getParsedBody();
return $this->apics->sendResponse($res, 'success' ,200, "Foo API POST Response", $oBody);
}
catch(\Exception $ex){
return $this->apics->sendResponse($res, 'error' ,500, "Process Error", array('error' => $ex->getMessage()));
}
});
});
When i trying to run my app with request body, the result is the follow:
Headers:
connection →Keep-Alive
content-type →text/html
date →Wed, 30 Aug 2017 02:22:56 GMT
keep-alive →timeout=2, max=500
server →Apache
transfer-encoding →chunked
Body (returns as simple text and not json encoded)
{"status":"success","code":200,"message":"Foo API POST Response","data":{"one":"1", "two":"2"}}
I've trying put this class as a middleware, but i'm some confused in these subject.
Can you help me telling me if these method is good or where i'm bad.
Thanks to all and i hope for your answers! Nice day

Answer 1

Using Middleware is the ideal answer for your problem
Just add this function in your middeleware file
$app->add(function ($req, $res, $next) {
$response = $next($req, $res);
return $response
->withHeader('Access-Control-Allow-Origin', 'http://mysite')
->withHeader('Access-Control-Allow-Headers', 'X-Requested-With, Content-Type, Accept, Origin, Authorization')
->withHeader('Access-Control-Allow-Methods', 'GET, POST, PUT, DELETE, OPTIONS');
->withHeader('Content-Type','application/json');
->withHeader('X-Powered-By','My API Server');
});

Answer 2

I found the "error" was a kindergarden issue hahaha, I've download all my code from the web server for test in my machine, I have the same result, but i found that all my files had strange characters at start, so i re-save the files as utf-8 and the problem is solved. Little details that can create headaches!. Thanks to Nica and Ramy. Ramy: the solution was excellent, now the code are more organizated, i take this practice. Good day to all.